1 files changed, 152 insertions, 31 deletions

diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index cd3991792b69..4e8710c7cb7b 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -2,7 +2,7 @@
 /*
  * Microchip switch driver main logic
  *
- * Copyright (C) 2017-2019 Microchip Technology Inc.
+ * Copyright (C) 2017-2024 Microchip Technology Inc.
  */
 
 #include <linux/delay.h>
@@ -246,16 +246,16 @@ static const struct ksz_drive_strength ksz9477_drive_strengths[] = {
 	{ SW_DRIVE_STRENGTH_28MA, 28000 },
 };
 
-/* ksz8830_drive_strengths - Drive strength mapping for KSZ8830, KSZ8873, ..
+/* ksz88x3_drive_strengths - Drive strength mapping for KSZ8863, KSZ8873, ..
  *			     variants.
  * This values are documented in KSZ8873 and KSZ8863 datasheets.
  */
-static const struct ksz_drive_strength ksz8830_drive_strengths[] = {
+static const struct ksz_drive_strength ksz88x3_drive_strengths[] = {
 	{ 0,  8000 },
 	{ KSZ8873_DRIVE_STRENGTH_16MA, 16000 },
 };
 
-static void ksz8830_phylink_mac_config(struct phylink_config *config,
+static void ksz88x3_phylink_mac_config(struct phylink_config *config,
 				       unsigned int mode,
 				       const struct phylink_link_state *state);
 static void ksz_phylink_mac_config(struct phylink_config *config,
@@ -265,8 +265,8 @@ static void ksz_phylink_mac_link_down(struct phylink_config *config,
 				      unsigned int mode,
 				      phy_interface_t interface);
 
-static const struct phylink_mac_ops ksz8830_phylink_mac_ops = {
-	.mac_config	= ksz8830_phylink_mac_config,
+static const struct phylink_mac_ops ksz88x3_phylink_mac_ops = {
+	.mac_config	= ksz88x3_phylink_mac_config,
 	.mac_link_down	= ksz_phylink_mac_link_down,
 	.mac_link_up	= ksz8_phylink_mac_link_up,
 };
@@ -277,7 +277,7 @@ static const struct phylink_mac_ops ksz8_phylink_mac_ops = {
 	.mac_link_up	= ksz8_phylink_mac_link_up,
 };
 
-static const struct ksz_dev_ops ksz88x3_dev_ops = {
+static const struct ksz_dev_ops ksz88xx_dev_ops = {
 	.setup = ksz8_setup,
 	.get_port_addr = ksz8_get_port_addr,
 	.cfg_port_member = ksz8_cfg_port_member,
@@ -572,6 +572,61 @@ static u8 ksz8863_shifts[] = {
 	[DYNAMIC_MAC_SRC_PORT]		= 20,
 };
 
+static const u16 ksz8895_regs[] = {
+	[REG_SW_MAC_ADDR]		= 0x68,
+	[REG_IND_CTRL_0]		= 0x6E,
+	[REG_IND_DATA_8]		= 0x70,
+	[REG_IND_DATA_CHECK]		= 0x72,
+	[REG_IND_DATA_HI]		= 0x71,
+	[REG_IND_DATA_LO]		= 0x75,
+	[REG_IND_MIB_CHECK]		= 0x75,
+	[P_FORCE_CTRL]			= 0x0C,
+	[P_LINK_STATUS]			= 0x0E,
+	[P_LOCAL_CTRL]			= 0x0C,
+	[P_NEG_RESTART_CTRL]		= 0x0D,
+	[P_REMOTE_STATUS]		= 0x0E,
+	[P_SPEED_STATUS]		= 0x09,
+	[S_TAIL_TAG_CTRL]		= 0x0C,
+	[P_STP_CTRL]			= 0x02,
+	[S_START_CTRL]			= 0x01,
+	[S_BROADCAST_CTRL]		= 0x06,
+	[S_MULTICAST_CTRL]		= 0x04,
+};
+
+static const u32 ksz8895_masks[] = {
+	[PORT_802_1P_REMAPPING]		= BIT(7),
+	[SW_TAIL_TAG_ENABLE]		= BIT(1),
+	[MIB_COUNTER_OVERFLOW]		= BIT(7),
+	[MIB_COUNTER_VALID]		= BIT(6),
+	[VLAN_TABLE_FID]		= GENMASK(6, 0),
+	[VLAN_TABLE_MEMBERSHIP]		= GENMASK(11, 7),
+	[VLAN_TABLE_VALID]		= BIT(12),
+	[STATIC_MAC_TABLE_VALID]	= BIT(21),
+	[STATIC_MAC_TABLE_USE_FID]	= BIT(23),
+	[STATIC_MAC_TABLE_FID]		= GENMASK(30, 24),
+	[STATIC_MAC_TABLE_OVERRIDE]	= BIT(22),
+	[STATIC_MAC_TABLE_FWD_PORTS]	= GENMASK(20, 16),
+	[DYNAMIC_MAC_TABLE_ENTRIES_H]	= GENMASK(6, 0),
+	[DYNAMIC_MAC_TABLE_MAC_EMPTY]	= BIT(7),
+	[DYNAMIC_MAC_TABLE_NOT_READY]	= BIT(7),
+	[DYNAMIC_MAC_TABLE_ENTRIES]	= GENMASK(31, 29),
+	[DYNAMIC_MAC_TABLE_FID]		= GENMASK(22, 16),
+	[DYNAMIC_MAC_TABLE_SRC_PORT]	= GENMASK(26, 24),
+	[DYNAMIC_MAC_TABLE_TIMESTAMP]	= GENMASK(28, 27),
+};
+
+static const u8 ksz8895_shifts[] = {
+	[VLAN_TABLE_MEMBERSHIP_S]	= 7,
+	[VLAN_TABLE]			= 13,
+	[STATIC_MAC_FWD_PORTS]		= 16,
+	[STATIC_MAC_FID]		= 24,
+	[DYNAMIC_MAC_ENTRIES_H]		= 3,
+	[DYNAMIC_MAC_ENTRIES]		= 29,
+	[DYNAMIC_MAC_FID]		= 16,
+	[DYNAMIC_MAC_TIMESTAMP]		= 27,
+	[DYNAMIC_MAC_SRC_PORT]		= 24,
+};
+
 static const u16 ksz9477_regs[] = {
 	[REG_SW_MAC_ADDR]		= 0x0302,
 	[P_STP_CTRL]			= 0x0B04,
@@ -1387,8 +1442,8 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.internal_phy = {true, true, true, true, false},
 	},
 
-	[KSZ8830] = {
-		.chip_id = KSZ8830_CHIP_ID,
+	[KSZ88X3] = {
+		.chip_id = KSZ88X3_CHIP_ID,
 		.dev_name = "KSZ8863/KSZ8873",
 		.num_vlans = 16,
 		.num_alus = 0,
@@ -1397,8 +1452,8 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.port_cnt = 3,
 		.num_tx_queues = 4,
 		.num_ipms = 4,
-		.ops = &ksz88x3_dev_ops,
-		.phylink_mac_ops = &ksz8830_phylink_mac_ops,
+		.ops = &ksz88xx_dev_ops,
+		.phylink_mac_ops = &ksz88x3_phylink_mac_ops,
 		.mib_names = ksz88xx_mib_names,
 		.mib_cnt = ARRAY_SIZE(ksz88xx_mib_names),
 		.reg_mib_cnt = MIB_COUNTER_NUM,
@@ -1412,6 +1467,61 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.rd_table = &ksz8873_register_set,
 	},
 
+	[KSZ8864] = {
+		/* WARNING
+		 * =======
+		 * KSZ8864 is similar to KSZ8895, except the first port
+		 * does not exist.
+		 *           external  cpu
+		 * KSZ8864   1,2,3      4
+		 * KSZ8895   0,1,2,3    4
+		 * port_cnt is configured as 5, even though it is 4
+		 */
+		.chip_id = KSZ8864_CHIP_ID,
+		.dev_name = "KSZ8864",
+		.num_vlans = 4096,
+		.num_alus = 0,
+		.num_statics = 32,
+		.cpu_ports = 0x10,	/* can be configured as cpu port */
+		.port_cnt = 5,		/* total cpu and user ports */
+		.num_tx_queues = 4,
+		.num_ipms = 4,
+		.ops = &ksz88xx_dev_ops,
+		.phylink_mac_ops = &ksz88x3_phylink_mac_ops,
+		.mib_names = ksz88xx_mib_names,
+		.mib_cnt = ARRAY_SIZE(ksz88xx_mib_names),
+		.reg_mib_cnt = MIB_COUNTER_NUM,
+		.regs = ksz8895_regs,
+		.masks = ksz8895_masks,
+		.shifts = ksz8895_shifts,
+		.supports_mii = {false, false, false, false, true},
+		.supports_rmii = {false, false, false, false, true},
+		.internal_phy = {false, true, true, true, false},
+	},
+
+	[KSZ8895] = {
+		.chip_id = KSZ8895_CHIP_ID,
+		.dev_name = "KSZ8895",
+		.num_vlans = 4096,
+		.num_alus = 0,
+		.num_statics = 32,
+		.cpu_ports = 0x10,	/* can be configured as cpu port */
+		.port_cnt = 5,		/* total cpu and user ports */
+		.num_tx_queues = 4,
+		.num_ipms = 4,
+		.ops = &ksz88xx_dev_ops,
+		.phylink_mac_ops = &ksz88x3_phylink_mac_ops,
+		.mib_names = ksz88xx_mib_names,
+		.mib_cnt = ARRAY_SIZE(ksz88xx_mib_names),
+		.reg_mib_cnt = MIB_COUNTER_NUM,
+		.regs = ksz8895_regs,
+		.masks = ksz8895_masks,
+		.shifts = ksz8895_shifts,
+		.supports_mii = {false, false, false, false, true},
+		.supports_rmii = {false, false, false, false, true},
+		.internal_phy = {true, true, true, true, false},
+	},
+
 	[KSZ9477] = {
 		.chip_id = KSZ9477_CHIP_ID,
 		.dev_name = "KSZ9477",
@@ -2614,7 +2724,7 @@ static u32 ksz_get_phy_flags(struct dsa_switch *ds, int port)
 	struct ksz_device *dev = ds->priv;
 
 	switch (dev->chip_id) {
-	case KSZ8830_CHIP_ID:
+	case KSZ88X3_CHIP_ID:
 		/* Silicon Errata Sheet (DS80000830A):
 		 * Port 1 does not work with LinkMD Cable-Testing.
 		 * Port 1 does not respond to received PAUSE control frames.
@@ -2937,12 +3047,10 @@ static enum dsa_tag_protocol ksz_get_tag_protocol(struct dsa_switch *ds,
 	struct ksz_device *dev = ds->priv;
 	enum dsa_tag_protocol proto = DSA_TAG_PROTO_NONE;
 
-	if (dev->chip_id == KSZ8795_CHIP_ID ||
-	    dev->chip_id == KSZ8794_CHIP_ID ||
-	    dev->chip_id == KSZ8765_CHIP_ID)
+	if (ksz_is_ksz87xx(dev) || ksz_is_8895_family(dev))
 		proto = DSA_TAG_PROTO_KSZ8795;
 
-	if (dev->chip_id == KSZ8830_CHIP_ID ||
+	if (dev->chip_id == KSZ88X3_CHIP_ID ||
 	    dev->chip_id == KSZ8563_CHIP_ID ||
 	    dev->chip_id == KSZ9893_CHIP_ID ||
 	    dev->chip_id == KSZ9563_CHIP_ID)
@@ -3054,7 +3162,9 @@ static int ksz_max_mtu(struct dsa_switch *ds, int port)
 	case KSZ8794_CHIP_ID:
 	case KSZ8765_CHIP_ID:
 		return KSZ8795_HUGE_PACKET_SIZE - VLAN_ETH_HLEN - ETH_FCS_LEN;
-	case KSZ8830_CHIP_ID:
+	case KSZ88X3_CHIP_ID:
+	case KSZ8864_CHIP_ID:
+	case KSZ8895_CHIP_ID:
 		return KSZ8863_HUGE_PACKET_SIZE - VLAN_ETH_HLEN - ETH_FCS_LEN;
 	case KSZ8563_CHIP_ID:
 	case KSZ8567_CHIP_ID:
@@ -3224,7 +3334,7 @@ phy_interface_t ksz_get_xmii(struct ksz_device *dev, int port, bool gbit)
 	return interface;
 }
 
-static void ksz8830_phylink_mac_config(struct phylink_config *config,
+static void ksz88x3_phylink_mac_config(struct phylink_config *config,
 				       unsigned int mode,
 				       const struct phylink_link_state *state)
 {
@@ -3408,10 +3518,22 @@ static int ksz_switch_detect(struct ksz_device *dev)
 		break;
 	case KSZ88_FAMILY_ID:
 		if (id2 == KSZ88_CHIP_ID_63)
-			dev->chip_id = KSZ8830_CHIP_ID;
+			dev->chip_id = KSZ88X3_CHIP_ID;
 		else
 			return -ENODEV;
 		break;
+	case KSZ8895_FAMILY_ID:
+		if (id2 == KSZ8895_CHIP_ID_95 ||
+		    id2 == KSZ8895_CHIP_ID_95R)
+			dev->chip_id = KSZ8895_CHIP_ID;
+		else
+			return -ENODEV;
+		ret = ksz_read8(dev, REG_KSZ8864_CHIP_ID, &id4);
+		if (ret)
+			return ret;
+		if (id4 & SW_KSZ8864)
+			dev->chip_id = KSZ8864_CHIP_ID;
+		break;
 	default:
 		ret = ksz_read32(dev, REG_CHIP_ID0, &id32);
 		if (ret)
@@ -4470,24 +4592,24 @@ static int ksz9477_drive_strength_write(struct ksz_device *dev,
 }
 
 /**
- * ksz8830_drive_strength_write() - Set the drive strength configuration for
- *				    KSZ8830 compatible chip variants.
+ * ksz88x3_drive_strength_write() - Set the drive strength configuration for
+ *				    KSZ8863 compatible chip variants.
  * @dev:       ksz device
  * @props:     Array of drive strength properties to be set
  * @num_props: Number of properties in the array
  *
- * This function applies the specified drive strength settings to KSZ8830 chip
+ * This function applies the specified drive strength settings to KSZ88X3 chip
  * variants (KSZ8873, KSZ8863).
  * It ensures the configurations align with what the chip variant supports and
  * warns or errors out on unsupported settings.
  *
  * Return: 0 on success, error code otherwise
  */
-static int ksz8830_drive_strength_write(struct ksz_device *dev,
+static int ksz88x3_drive_strength_write(struct ksz_device *dev,
 					struct ksz_driver_strength_prop *props,
 					int num_props)
 {
-	size_t array_size = ARRAY_SIZE(ksz8830_drive_strengths);
+	size_t array_size = ARRAY_SIZE(ksz88x3_drive_strengths);
 	int microamp;
 	int i, ret;
 
@@ -4500,10 +4622,10 @@ static int ksz8830_drive_strength_write(struct ksz_device *dev,
 	}
 
 	microamp = props[KSZ_DRIVER_STRENGTH_IO].value;
-	ret = ksz_drive_strength_to_reg(ksz8830_drive_strengths, array_size,
+	ret = ksz_drive_strength_to_reg(ksz88x3_drive_strengths, array_size,
 					microamp);
 	if (ret < 0) {
-		ksz_drive_strength_error(dev, ksz8830_drive_strengths,
+		ksz_drive_strength_error(dev, ksz88x3_drive_strengths,
 					 array_size, microamp);
 		return ret;
 	}
@@ -4563,8 +4685,8 @@ static int ksz_parse_drive_strength(struct ksz_device *dev)
 		return 0;
 
 	switch (dev->chip_id) {
-	case KSZ8830_CHIP_ID:
-		return ksz8830_drive_strength_write(dev, of_props,
+	case KSZ88X3_CHIP_ID:
+		return ksz88x3_drive_strength_write(dev, of_props,
 						    ARRAY_SIZE(of_props));
 	case KSZ8795_CHIP_ID:
 	case KSZ8794_CHIP_ID:
@@ -4595,7 +4717,7 @@ static int ksz_parse_drive_strength(struct ksz_device *dev)
 int ksz_switch_register(struct ksz_device *dev)
 {
 	const struct ksz_chip_data *info;
-	struct device_node *port, *ports;
+	struct device_node *ports;
 	phy_interface_t interface;
 	unsigned int port_num;
 	int ret;
@@ -4681,12 +4803,11 @@ int ksz_switch_register(struct ksz_device *dev)
 		if (!ports)
 			ports = of_get_child_by_name(dev->dev->of_node, "ports");
 		if (ports) {
-			for_each_available_child_of_node(ports, port) {
+			for_each_available_child_of_node_scoped(ports, port) {
 				if (of_property_read_u32(port, "reg",
 							 &port_num))
 					continue;
 				if (!(dev->port_mask & BIT(port_num))) {
-					of_node_put(port);
 					of_node_put(ports);
 					return -EINVAL;
 				}